The Commuter (Over 18s)
15

Former NYPD detective Michael McCauley loses his job. He heads home on his usual rail service and settles down to read a book. An enigmatic woman called Joanna slinks into the opposite seat and strikes up a cryptic conversation. She intimates there is a brown paper bag containing 25,000 US dollars hidden in one of the toilets and Michael can earn a further 75,000 US dollars if he agrees to find a passenger called Prynne, who is travelling to Cold Spring station in Zone 7.